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HeliProz . ZoomsHobbies . HeliHobby

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e-Gaui Hurricane 200 & 550 - EP100 > Hurricane 200 Looking for closeup setup pics
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

pitch curve

the problem with starting at 0 is at full low stick you will have full neg pitch somethin like -11 degrees. so if the throttle is chopped abruptly the heli will pound into the ground. so if i start with 34 then i get -2 drees at low stick.
so:
34 34 50 70 100
gives me -2deg, -2deg, 0deg, 6deg, 12deg
i can't fly 3D just not good enough. so i need things to be as smooth and stable as possible.
any input from you guy's on this set up would be great.
thanks, john
01-17-2008 12:55 AM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

John,

My setup is going to be alot diffent then yours. I am setup to run full pitch without binding or bogging. I have no idea what the exact numbers are, never measured! I am also running a 95% flat curve in Idleup, so those blades are moving. On cyclic expo I am at 40%. 28% gain on the 401.

For your setup, your pitch is fine. I think the flybar wieghts are important to keep on. What expo are you running on the cyclics, I think I am running +40% but you may require more for a novice flyer.

I also recommend flying in Idle up if you aren't already, with a flat curve (say 70% across the boards). Flying in Idleup helps smooth out the throttle because the motor is revved up. The jumpyness you feel from the throttle is probably due to flying in Normal mode. Increase pitch, increase motor rpm, decrease pitch, decrease motor rpm. Constantly increasing, and decreasing engine rpm. So when you lower your stick, the heli wants to fall, raise the stick and because your headspeed is low, it takes a second to catch up, causing torque changes. If you can fly a whole pack without landing, you should get in the habit of switching into Idleup as soon as you takeoff, then switching into Normal mode when landing. It will help.
01-17-2008 02:02 AM
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

idle up

so in idle up can i hover?
sounds like you are saying i can't land in idle up?
because of the high headspeed?
sounds complicated. if i have to think to move a switch to land what if i'm hovering and get in trouble and need to land fast. i have to switch back to normal mode? this would make things harder for me right now i think. is there a way to fine tune normal mode and smooth out the touchy throttle?
help needed, john
01-17-2008 03:19 AM
 
 
jayphonic
Heliman
Location: cranston, ri, usa

if idle up is a bit much for you then do as rick suggests and run throttle and pitch curves from 0 to 70% only... same travel distance on your sticks but with a lower max like say 70% = gentle throttle... i think that if you change your throttle to a 70 % curve, your pitch curve should be the same as well... i remember somebody told me your pitch curve should never be ahead of your throttle curve... somebody please confirm/deny this...

oh yeah... you can land in idle up... but that is probably more advanced than you are ready for

-phonic
01-17-2008 04:12 AM
HOMEPAGE  
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

confusion

man i'm getting more confused now. if my pitch curve is:
34 34 50 70 100

then my throttle curve needs to be the same numbers??
-john
01-17-2008 08:04 AM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

sure you can land in Idleup, as long as its slowly. Then when you touchdown, switch to Normal and spool down. If your pitch curves are the same in all modes, then your only landing with -2deg. Thats not that difficult.

You can do it!

If you choose to stay in Normal, try this for your throttle curves.

34 34 50 70 70

It will lower your headspeed. Also you can mess around with the curve.

Like this...

34 50 50 70 70 ... this way its a smoother more broader curve. Still, flying in Idleup will alleviate that motor from sudden changes, seeings how its running the same rpm constantly.

what expo are you running John?
01-17-2008 12:01 PM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

Dammit, got it all squared away on the c/g and planted it into the hangar door back to the drawing board again!

damage:

blades
canopy
paddles
servo gears
landing gear
bent arms on the mainblade grips
01-17-2008 06:55 PM
 
 
chopperben1
Heliman
Location: Ontario, Canada

Ouch!
01-18-2008 12:11 AM
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

throttle and pit curves

that sucks about the crash rick. hope you get the bird back up again soon.
what about the pitch curve?
if i use 34 34 50 50 70 for the throttle cuve
then what should the pitch curve look like?
-john
01-18-2008 12:54 AM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

no biggie, parts are on the way!

pitch curves shouldnt change. whatever you have programmed to get your pitch values is fine, dont change them. just give that throttle curve a try and see if it gets smoother.

and again...

what expo percentage expo are you running?
01-18-2008 01:14 AM
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

gave it a try

I just hovered it a bit. things seem better. the head speed is low but things are more managable now.
my expo's are pos 0 , 33 and pos 1, 43.
thanks, john
01-18-2008 01:25 AM
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

canopy mount

i noticed something nice last night. the t-rex canopy posts will fit on the Hurricane 200. i hate the screw they use it's a real pia.
my two cents.
-john
01-18-2008 01:27 AM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

Quote 
my expo's are pos 0 , 33 and pos 1, 43.
the pos of the switch (0 or 1) should be the same all the time for expo. Mine are left in position 0 for all the cyclic values. Heres mine,

In the DX7 under
- D/R & Expo
- Pos 0
- AILE
EXP +40%

- D/R & Expo
- Pos 0
- ELEV
EXP +40%

- D/R & Expo
- Pos 0
- RUDD
EXP LIN

Hope this helps!

Quote 
I just hovered it a bit. things seem better. the head speed is low but things are more managable now.
PS: if the h/s seems to low, goto 80% and try more expo, say 60%
01-18-2008 02:17 AM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

450 posts

PS: hey man, you stealing my idea yeah, I got tired of the screws also, I kept dropping them while installing the canopy. You do have to cut off about 3/8" off the inside, then redrill a hole and screw them in. But they work great!



01-18-2008 02:20 AM
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

canopy stays

lol, you are funny rick.
i am using the aluminum ones from the t-rex.
you don't have to do any cuting. they spread the canopy open a little more for more clearence on the servo arms.
pretty good idea we think alike!
good job.
-john
01-18-2008 05:17 AM
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

D/R AND EXPO

I like having two settings to switch between for the D/R. one for calm day and one for windy. isn't it just a preference thing?
expo is 33% at 0 and 43% at pos 1.
-john
01-18-2008 05:24 AM
 
 
S76 Mech
Elite Veteran
Location: Hatboro, Pa.

yup, sure is, I was just thinking if you have 43% expo you might be a little better with some more, might smooth things out a little more.

I ordered the cnc boom mount like you have, I noticed that the boom wasn't clamping tight enough and it was spinning slightly.

any problems with the installation on yours?
01-18-2008 04:56 PM
 
 
JeepCJ
Key Veteran
Location: Pennellville NY (Syracuse Heli Group)

Has anyone replaced the main gear yet? I noticed the coller that comes with the new gear is only stepped on one side, and the one that was in there has steps on both sides? If using the new coller, which way did you face the step, up or down?


Bob

Helicopters....it's all in your head
01-18-2008 07:28 PM
HOMEPAGE  
 
 
johnIn2Son
Heliman
Location: Tucson,AZ USA

cnc boom support

the cnc boom support works perfectly. the flat portion goes up. there is a u shape on the underneath you have to snake it in the frame but fit is excellent. i notice it is the same piece for the mainshaft support also. i'm going to get some more and replace those to. the plastic ends up stripping or not holding very tight with the screws. cheap design it would have been perfect with all metal mounts.
if i remember correctly the step goes down on the first collar to fit into the main gear. you should be able to see a difference either way.

-john
01-18-2008 10:51 PM
 
 
Mikej
Heliman
Location: UK

Rick,

Just a small thing, but you could improve your CoG slightly by turning your tail / rudder servo through 180 degrees and moving the servo forward slightly - i.e. put the long part of the servo at the back.

It's only a small thing but I guess 10 small adhustments might help.
Cheers,
Mike.
01-19-2008 07:58 PM
 
 
19 pages [ <<    <     6      7     ( 8 )     9      10     NEXT    >> ]10919 viewsPOST REPLY
Ron’s HeliProz South . Century Helicopter . MTA Hobbies

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e-Gaui Hurricane 200 & 550 - EP100 > Hurricane 200 Looking for closeup setup pics
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